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fix for div by zero reported by address sanitizer

pull/2601/head
Ghanshyam Bhutra 2019-08-16 17:04:42 -07:00 committed by GitHub
parent 812397d681
commit f69bf5f7ed
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 3 additions and 3 deletions
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6
code/PostProcessing/CalcTangentsProcess.cpp
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@ -212,7 +212,7 @@ bool CalcTangentsProcess::ProcessMesh( aiMesh* pMesh, unsigned int meshIndex)
// project tangent and bitangent into the plane formed by the vertex' normal // project tangent and bitangent into the plane formed by the vertex' normal
aiVector3D localTangent = tangent - meshNorm[p] * (tangent * meshNorm[p]); aiVector3D localTangent = tangent - meshNorm[p] * (tangent * meshNorm[p]);
aiVector3D localBitangent = bitangent - meshNorm[p] * (bitangent * meshNorm[p]); aiVector3D localBitangent = bitangent - meshNorm[p] * (bitangent * meshNorm[p]);
localTangent.Normalize(); localBitangent.Normalize(); localTangent.NormalizeSafe(); localBitangent.NormalizeSafe();
// reconstruct tangent/bitangent according to normal and bitangent/tangent when it's infinite or NaN. // reconstruct tangent/bitangent according to normal and bitangent/tangent when it's infinite or NaN.
bool invalid_tangent = is_special_float(localTangent.x) || is_special_float(localTangent.y) || is_special_float(localTangent.z); bool invalid_tangent = is_special_float(localTangent.x) || is_special_float(localTangent.y) || is_special_float(localTangent.z);
@ -220,10 +220,10 @@ bool CalcTangentsProcess::ProcessMesh( aiMesh* pMesh, unsigned int meshIndex)
if (invalid_tangent != invalid_bitangent) { if (invalid_tangent != invalid_bitangent) {
if (invalid_tangent) { if (invalid_tangent) {
localTangent = meshNorm[p] ^ localBitangent; localTangent = meshNorm[p] ^ localBitangent;
localTangent.Normalize(); localTangent.NormalizeSafe();
} else { } else {
localBitangent = localTangent ^ meshNorm[p]; localBitangent = localTangent ^ meshNorm[p];
localBitangent.Normalize(); localBitangent.NormalizeSafe();
} }
} }